21142128

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 120

約数和(自身を含む): 64884240

約数和(自身を除く): 43742112

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 49, 56, 84, 89, 98, 101, 112, 147, 168, 178, 196, 202, 267, 294, 303, 336, 356, 392, 404, 534, 588, 606, 623, 707, 712, 784, 808, 1068, 1176, 1212, 1246, 1414, 1424, 1616, 1869, 2121, 2136, 2352, 2424, 2492, 2828, 3738, 4242, 4272, 4361, 4848, 4949, 4984, 5656, 7476, 8484, 8722, 8989, 9898, 9968, 11312, 13083, 14847, 14952, 16968, 17444, 17978, 19796, 26166, 26967, 29694, 29904, 33936, 34888, 35956, 39592, 52332, 53934, 59388, 62923, 69776, 71912, 79184, 104664, 107868, 118776, 125846, 143824, 188769, 209328, 215736, 237552, 251692, 377538, 431472, 440461, 503384, 755076, 880922, 1006768, 1321383, 1510152, 1761844, 2642766, 3020304, 3523688, 5285532, 7047376, 10571064, 21142128]

約数ペア:

[(1, 21142128), (2, 10571064), (3, 7047376), (4, 5285532), (6, 3523688), (7, 3020304), (8, 2642766), (12, 1761844), (14, 1510152), (16, 1321383), (21, 1006768), (24, 880922), (28, 755076), (42, 503384), (48, 440461), (49, 431472), (56, 377538), (84, 251692), (89, 237552), (98, 215736), (101, 209328), (112, 188769), (147, 143824), (168, 125846), (178, 118776), (196, 107868), (202, 104664), (267, 79184), (294, 71912), (303, 69776), (336, 62923), (356, 59388), (392, 53934), (404, 52332), (534, 39592), (588, 35956), (606, 34888), (623, 33936), (707, 29904), (712, 29694), (784, 26967), (808, 26166), (1068, 19796), (1176, 17978), (1212, 17444), (1246, 16968), (1414, 14952), (1424, 14847), (1616, 13083), (1869, 11312), (2121, 9968), (2136, 9898), (2352, 8989), (2424, 8722), (2492, 8484), (2828, 7476), (3738, 5656), (4242, 4984), (4272, 4949), (4361, 4848)]